CN103669722B - Steel Framed Structure with Special-Shaped Columns suspension column is easily repaired after a kind of shake - Google Patents

Steel Framed Structure with Special-Shaped Columns suspension column is easily repaired after a kind of shake Download PDF

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Publication number
CN103669722B
CN103669722B CN201310703496.4A CN201310703496A CN103669722B CN 103669722 B CN103669722 B CN 103669722B CN 201310703496 A CN201310703496 A CN 201310703496A CN 103669722 B CN103669722 B CN 103669722B
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column
suspension column
steel
plate
shape
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CN103669722A (en
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高娇娇
苏经宇
马东辉
王威
郭小东
王志涛
熊志阳
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Nantong New Fengwei Machinery Technology Co.,Ltd.
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Beijing University of Technology
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Abstract

Steel Framed Structure with Special-Shaped Columns suspension column is easily repaired after a kind of shake, Self-resetting suspension column prestressing force suspension column optimizes axis and the horizontal direction stress performance of column bottom by stiffener, anti-buckling steel plate is mainly used to dissipation seismic energy, and shear plate prevents the excessive local yielding caused at the bottom of post of shearing; The key member of described prestressing force suspension column is prestressed draw-bar, and the effect of pull bar is that coupled columns provides precompression to make post and beam compact siro spinning technology, thus makes that suspension column is approximate when bearing moment of flexure and being less to be rigidly connected, and self-resetting capability after making it have shake.

Description

Steel Framed Structure with Special-Shaped Columns suspension column is easily repaired after a kind of shake
Technical field
The present invention relates to a kind of Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, belong to quake evaluation technical field, particularly relate to a kind of Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column
Background technology
Collapsing of building in earthquake threatens people's life safety and the topmost reason that causes any property loss.Wenchuan and Yaan earthquake show that concrete structure anti-seismic performance is not good, the steel work development of current China rapidly, especially prestressed steel structure technology is in international most advanced level, Bidirectional String Structure in National Gymnasium and Beijing University of Technology Gymnasium suspended-dome structure all create the maximum world record of homogeneous structure span at that time, have led the development of prestressed steel structure.Play prestressing technique advantage, apply it on Column Joint, anti-seismic performance and the self-resetting capability of node can be improved, and Column Joint designs to obtain the fine or not quality directly having influence on steel work.If component does not destroy and node had lost efficacy, just do not reach the original intention of seismic design of structures, more can not meet the design concept of " strong node, weak component ".
On January 17th, 1994, Los Angeles,U.S generation earthquake, the steel building of building more than 100 is in the fracture of bean column node position, and crackle originates from bean column node weld seam usually.After 1 year, the slope god of Japan there occurs earthquake, the display of shake " Invest, Then Investigate ", causes the basic reason of major part fracture to be the design of node and the problem of construction aspect.This two secondary earthquake has impelled the design of scholar's research and knot modification.Before there is earthquake in Los Angeles in 1994, the joint form adopted as shown in Figure 1 more.Before Los Angeles earthquake occurs, this node is cheap, easy construction, and generally believed that this joint form can utilize Material ductility preferably at that time, impel beam-ends to occur plastic hinge, make node avoid destroying, realize the design philosophy of " strong node, weak component ".But in earthquake, this kind of joint form does not show due ductility, and has occurred brittle fracture prematurely, crackle originates from bean column node weld seam usually.Draw by analysis and cause the basic reason of major part fracture to be the design of node and the problem of construction aspect.10 years after the earthquake of Los Angeles, one of beam-to-column joint performance and the primary study content becoming field of steel structure of the impact on steel framed structure thereof.
Summary of the invention
The object of the present invention is to provide a kind of Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, this suspension column can significantly improve the anti-seismic performance of structure, repairs difficulty and maintenance cost after reducing shake; In work progress, first top-seat-angle steel is installed, then high-strength steel pull bar be installed and carry out stretch-draw, under the effect of pull bar stretching force, beam column contact surface produces compressive stress, this compressive pre-stress provides larger resist torque by for suspension column, and the frictional force of beam column contact surface will provide larger opposing shearing for suspension column.Backing plate and beam-to-column joint plate are installed between beam end and post, preventing web and post from directly contacting causes local stress excessive, one piece of stiffener is respectively welded at the upper bottom flange place of beam, stiffener can increase the contact surface between flange of beam and post, thus the compressive stress in reduction flange of beam, avoid flange of beam local yielding under action of compressive stress.
The initial stiffness of suspension column and welding node are substantially suitable, and when story drift reaches 5%, agent structure beam and column still keeps elasticity, and high-performance steel then enters plastic state with dissipation energy, and after geological process, suspension column can be returned to its initial position.
Prestressed applying enables steel framed structure obtain higher safety factor.The major advantage of prestressing force suspension column: (1) has self-centering ability, thus permanent set after substantially reducing shake; (2) initial stiffness is comparatively large similar to full welding node, is equivalent to rigid joint; (3) under earthquake, beam column all keeps elasticity, and nonelastic deformation concentrates on node, and provides energy consume mechanism by the nonelastic deformation of high-performance steel; (4) difficulty and cost is repaired after greatly reducing shake.
For achieving the above object, the technical solution used in the present invention is a kind of Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, and the beam involved by this structure is the double flute girder steel be made up of shaped steel, and double flute girder steel is spliced at beam-ends web plate by single channel-section steel.
Suspension column position is at hetermorphiscal column and ground connecting place.
In Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column of the present invention, L shape suspension column Connection Step is that beam-to-column joint plate welds in factory in advance with web plate, beam-to-column joint plate is perpendicular to web plate, web plate is positioned at the middle part of beam-to-column joint plate, it highly equals the shape steel web height of double flute girder steel, and the beam-to-column joint plate welded together and web plate are fixed on the L shape hetermorphiscal column edge of a wing by scene bolt; Double flute girder steel is divided into two channel-section steels, when suspension column connects, two channel-section steels one are reinstated bolt to be connected on web plate, is to strengthen the strength and stiffness that suspension column place beam is connected with hetermorphiscal column, applies three weld all arounds in double flute girder steel and beam-to-column joint plate contact position and channel-section steel inner ring; Another limb is identical with this limb; The manomelia interior welds transverse stiffener (welding can in factory process complete, T-shaped, cross do not need welding) larger in L shape hetermorphiscal column moment of flexure welds angle steel in order to fixing prestressed draw-bar up and down at stiffening rib; By prestressed draw-bar through reserving hole, and Shi Hanzhang, be anchored on angle steel with permanent ground tackle; Again anti-buckling plate, stiffener and cover plate bolt are connected to L shape hetermorphiscal column edge of a wing place; Cover plate periphery has outstanding surrounding edge, with cover plate and stiffener definitely closely knit, prevent moisture from invading cover plate internal corrosion anti-buckling plate; Again shear plate bolt is connected with double flute girder steel.
T-shaped suspension column is identical with L shape with cross suspension column Connection Step, and welding angle steel is arranged on the larger limb of moment of flexure suffered by hetermorphiscal column, and another limb does not need to arrange; Because T-shaped suspension column and cross suspension column are one side symmetry or double-sided symmetrical, not easily unstability, stiffening rib can not be arranged.
In Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column of the present invention, the form of hetermorphiscal column has three kinds, is respectively L shape hetermorphiscal column, T-shaped hetermorphiscal column, cross hetermorphiscal column; Its suspension column form comprises three kinds of form L shape suspension columns, T-shaped suspension column, cross suspension columns; Wherein, L shape suspension column is divided into A, B two sides, and T-shaped suspension column is divided into A, B, C tri-faces, and cross suspension column is totally four faces, but four faces are all identical.
Compared with prior art, the present invention has following beneficial effect.
1, in above-mentioned Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, the beam adopted is all section steel beam, because the belly space of beam is comparatively large, is convenient to pipeline and passes, effectively increase the clear height in room.
2, described Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, bolt is adopted to carry out site assembly completely, eliminate traditional Site Welding mode and concreting mode, effectively ensure that construction quality, completely avoid the environment pollution that concreting and welded steel cause, realize " anhydrous, without fire, dustless " of site operation three without standard, decrease the generation of the hazardous accidents such as fire.The present invention, when component is removed, can recycle efficiently, decrease building waste, the real theory achieving environmental protection, is the steel structure system of a kind of green, sustainable development.
3, described Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, adopts prestressing force Self-resetting suspension column form, achieves the Self-resetting of shake posterior nodal point, greatly reduces the rear rehabilitation cost of shake; Improve the anti-seismic performance of node, thus improve the anti-seismic performance of frame structure system.
4, the Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column that the present invention proposes is overturning traditional steel building suspension column, has given full play to the advantage of steel work.The plurality of advantages such as compared with traditional steel work suspension column, it is high that it has security performance, and environment pollution is little, and the few and construction costs of security incident is low.
Accompanying drawing explanation
Fig. 1 is channel steel type girder steel schematic diagram of the present invention
Fig. 2 is Self-resetting suspension column position view of the present invention
Fig. 3 is that L shape prestressing force Self-resetting suspension column of the present invention splits schematic diagram
Fig. 4 is that T-shaped prestressing force Self-resetting suspension column of the present invention splits schematic diagram
Fig. 5 is that cross prestressing force Self-resetting suspension column of the present invention splits schematic diagram
Fig. 6 is L shape post schematic diagram of the present invention
Fig. 7 is T-shaped post schematic diagram of the present invention
Fig. 8 is cross section column schematic diagram of the present invention
Fig. 9 is L shape Self-resetting suspension column facade A decomposing schematic representation of the present invention
Figure 10 is L shape Self-resetting suspension column facade B decomposing schematic representation of the present invention
Figure 11 is T-shaped Self-resetting suspension column facade A decomposing schematic representation of the present invention
Figure 12 is T-shaped Self-resetting suspension column facade B decomposing schematic representation of the present invention
Figure 13 is T-shaped Self-resetting suspension column facade C decomposing schematic representation of the present invention
Figure 14 is cross Self-resetting suspension column facade decomposing schematic representation of the present invention
In figure: 1, double flute girder steel, 2, cover plate, 3, anti-buckling plate, 4, stiffener, 5, shear plate, 6, stiffening rib, 7, prestressed draw-bar, 8, angle steel, 9, L shape hetermorphiscal column, 10, T-shaped hetermorphiscal column, 11, cross hetermorphiscal column,
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, involved beam is the double flute girder steel 1 be made up of shaped steel, and double flute girder steel 1 is spliced at beam-ends web plate by single channel-section steel.
As shown in Figure 2, suspension column position is at hetermorphiscal column and ground connecting place.
As shown in figures 3-5, in Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column of the present invention, L shape suspension column Connection Step is that beam-to-column joint plate welds in factory in advance with web plate, beam-to-column joint plate is perpendicular to web plate, web plate is positioned at the middle part of beam-to-column joint plate, it highly equals the shape steel web height of double flute girder steel 1, and the beam-to-column joint plate welded together and web plate are fixed on L shape hetermorphiscal column 9 edge of a wing by scene bolt; Double flute girder steel 1 is divided into two channel-section steels, when suspension column connects, two channel-section steels one are reinstated bolt to be connected on web plate, for strengthening the strength and stiffness that suspension column place beam is connected with hetermorphiscal column, applies three weld all arounds at double flute girder steel 1 and beam-to-column joint plate contact position and channel-section steel inner ring; Another limb is identical with this limb; The manomelia interior welds transverse stiffener 6 (welding can in factory process complete, T-shaped, cross do not need welding) larger in L shape hetermorphiscal column moment of flexure welds angle steel 8 in order to fixing prestressed draw-bar at stiffening rib about 6; By prestressed draw-bar 7 through reserving hole, and Shi Hanzhang, be anchored on angle steel 8 with permanent ground tackle; Again by anti-buckling plate 3, stiffener 4, and cover plate 2 bolt is connected to L shape hetermorphiscal column 9 edge of a wing place; Cover plate 2 periphery has outstanding surrounding edge, definitely closely knit with cover plate 2 and stiffener 4, prevents moisture from invading the anti-buckling plate 3 of cover plate internal corrosion; Again shear plate 5 bolt is connected with double flute girder steel 1.
T-shaped suspension column is identical with L shape with cross suspension column Connection Step, welding angle steel is arranged on the larger limb of moment of flexure suffered by hetermorphiscal column, and another limb does not need to arrange, because T-shaped suspension column and cross suspension column are one side symmetry or double-sided symmetrical, not easily unstability, can not arrange stiffening rib 6.
As shown in accompanying drawing 6-14, in Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column of the present invention, the form of hetermorphiscal column has three kinds, is respectively L shape hetermorphiscal column 9, T-shaped hetermorphiscal column 10, cross hetermorphiscal column 11; Described Novel post-earthquake easy-to-repair steel irregular column framework structure suspension column, its suspension column form comprises three kinds of forms: L shape suspension column, T-shaped suspension column, cross suspension column; Wherein, L shape suspension column is divided into A, B two sides, and T-shaped suspension column is divided into A, B, C tri-faces, and cross suspension column is totally four faces, but four faces are all identical.

Claims (1)

1. easily repair a steel Framed Structure with Special-Shaped Columns suspension column after shake, it is characterized in that: involved beam is the double flute girder steel (1) be made up of shaped steel, and double flute girder steel (1) is spliced at beam-ends web plate by single channel-section steel;
Suspension column position is at hetermorphiscal column and ground connecting place;
L shape suspension column Connection Step is that beam-to-column joint plate welds in factory in advance with web plate, beam-to-column joint plate is perpendicular to web plate, web plate is positioned at the middle part of beam-to-column joint plate, it highly equals the shape steel web height of double flute girder steel (1), and the beam-to-column joint plate welded together and web plate are fixed on L shape hetermorphiscal column (9) edge of a wing by scene bolt; Double flute girder steel (1) is divided into two channel-section steels, when suspension column connects, two channel-section steels one are reinstated bolt to be connected on web plate, for strengthening the strength and stiffness that suspension column place beam is connected with hetermorphiscal column, apply three weld all arounds at double flute girder steel (1) and beam-to-column joint plate contact position and channel-section steel inner ring; Another limb is identical with this limb; At the manomelia interior welds transverse stiffener (6) that L shape hetermorphiscal column moment of flexure is larger, weld angle steel (8) up and down in order to fixing prestressed draw-bar at stiffening rib (6); By prestressed draw-bar (7) through reserving hole, and Shi Hanzhang, be anchored on angle steel (8) with permanent ground tackle; Again anti-buckling plate (3), stiffener (4) and cover plate (2) bolt are connected to L shape hetermorphiscal column (9) edge of a wing place; Cover plate (2) periphery has outstanding surrounding edge, definitely closely knit to ensure cover plate (2) and stiffener (4), prevents moisture from invading the anti-buckling plate of cover plate internal corrosion (3); Again shear plate (5) bolt is connected with double flute girder steel (1);
T-shaped suspension column is identical with L shape with cross suspension column Connection Step, welding angle steel is arranged on the larger limb of moment of flexure suffered by hetermorphiscal column, and another limb does not need to arrange, because T-shaped suspension column and cross suspension column are one side symmetry or double-sided symmetrical, not easily unstability, does not arrange stiffening rib (6);
The form of hetermorphiscal column has three kinds, is respectively L shape hetermorphiscal column (9), T-shaped hetermorphiscal column (10), cross hetermorphiscal column (11); Described shake easily repairs steel Framed Structure with Special-Shaped Columns suspension column afterwards, and its suspension column form comprises three kinds of forms, L shape suspension column, T-shaped suspension column, cross suspension column; Wherein, L shape suspension column is divided into A, B two sides, and T-shaped suspension column is divided into A, B, C tri-faces, and cross suspension column is totally four faces, but four faces are all identical.
CN201310703496.4A 2013-12-19 2013-12-19 Steel Framed Structure with Special-Shaped Columns suspension column is easily repaired after a kind of shake Active CN103669722B (en)

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CN104405080A (en) * 2014-11-24 2015-03-11 南京工业大学 Corrugated web plate L-shaped section specially-shaped steel column

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000192547A (en) * 1998-12-28 2000-07-11 Just Joining method and joining structure for column member and horizontal member in steel frame structure
KR20110018282A (en) * 2010-09-20 2011-02-23 김영갑 Double steel frame earthquake-proof device
CN202767245U (en) * 2012-09-17 2013-03-06 同济大学 One-way restraint performance based connecting joint of steel structure
CN202787569U (en) * 2012-07-20 2013-03-13 西安建筑科技大学 Eccentric brace type steel plate shear wall
CN103276832A (en) * 2013-06-08 2013-09-04 北京工业大学 Hollow irregular column multi-layer high-rise assembling steel frame-steel plate shear wall system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000192547A (en) * 1998-12-28 2000-07-11 Just Joining method and joining structure for column member and horizontal member in steel frame structure
KR20110018282A (en) * 2010-09-20 2011-02-23 김영갑 Double steel frame earthquake-proof device
CN202787569U (en) * 2012-07-20 2013-03-13 西安建筑科技大学 Eccentric brace type steel plate shear wall
CN202767245U (en) * 2012-09-17 2013-03-06 同济大学 One-way restraint performance based connecting joint of steel structure
CN103276832A (en) * 2013-06-08 2013-09-04 北京工业大学 Hollow irregular column multi-layer high-rise assembling steel frame-steel plate shear wall system

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